this derivation will be built:
  /nix/store/1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv
building '/nix/store/1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=21&system=aarch64-linux'
1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv: elastic-arm-99e59b18: not scheduled here: 1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv, asking the scheduler again
1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv: elastic-arm-99e59b18: not scheduled here: 1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv, asking the scheduler again
1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv: elastic-arm-6cbc966c: not scheduled here: 1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv, asking the scheduler again
building '/nix/store/1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv' on farm.numtide.com:50051
interpolate-conformance> elastic-arm-6cbc966c: building 1s2fzhday0rn84npf3q2f8jghs6l0kaq-interpolate-conformance.drv
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok